Fire-extinguishing device



Au 18, 1925. N 1,550,308

0. R. ERWIN FIRE BXTINGUISHING DEVICE F iled Dec.' 1920 2 Sheets$heet 1Zjwwewtoz OrZaJZdOREPwim $511 7 1's alien wits 042 144 W4 we Aug. 18,

1,550,308 O. R. ERWIN FIRE EXTINGUISHING DEVICE Filed Dec. 1920 2Shuts-Sheet 2 mmtoz Or'ZcmdOR. Era/20,

I 1's War/nu s Patented Aug. 18, 1925.

UNITED STATES 1,550 PATENT OFFICE.

ORLANDO ERwimonro EsrHInLs, NEW YOR AssIeiNoR To roAMrrn-oHILnsCORPORATION, or NEW YORK, N. Y., A CORPORATION or DELAWARE.

FIRE-'EXTINGUIsHING Device.

Application filed December 10, 1920.

To all whom it may (game m:

Be it known that I, ORLANDO R. ERWIN, a citizen of the United States,and resident of Forest Hills, in the county of Queens and State of NewYork, have invented oer tain new and useful Improvements in Fire-Extinguishing Devices, of which the following is aspecificaition.

This invention relates to foam-=type portable fire extinguishers and itsobject is to prevent premature mixing of the solutions when theextinguisher is being carried about and otherwise to improve suchextinguishers.

In the accompanying drawing:

Figure 1 is an elevational view in cross section of my extinguisher,

Figure 2 is a top plan view thereof,

Figure'3 is a cross sectional view on the line 33, Figure 1,

Figure 4 is a cross sectional view of a portion of the device on theline 4-4, Figure 2,

Figure 5 is an elevational view in cross section of a modified form ofthe extinguisher,

Figure 6 is a top plan view of form shown in Figure 5,

Fi ure 7 is a cross sectional view on the line (7, Figure 5, and

Figure 8 is a cross sectional View of a por tion of the device on theline 8-8, Figure 6.

Referring to Figures 1 to 4 of the drawings, the container comprises anouter receptacle having preferably a cylindrical body portion 10;thisbody portion beingprovided preferably with integral end supportingportions 11 and 12 respectively; said end stippb'rting portionsterminating in reinforced beads 13 and 14 respectively for eflicientlysupporting the container in both erectandinverted positions, the erectposition of the container being shown in Figure 1. The outer receptacleis provided with a bottom which may be a dished bottom 15', having anannular flange portion 16, the bottom 15 being inserted through the endsupporting portion 11, with the rim of the flange 16 seating on theinwardly stamped armnlar bead 17, the bottom 15 being preferably fixedin this position by means of being brazed to the cylindrical wall of theouter receptacle, as at 18. The top of. the container is closed by adome 19, having an annular flange 2O seated on the inwardly stampedannular head 21, the dome being either permanently Serial Nd. 429,660.

fixed in position on the container or removable therefrom as inay bedesired, the preferred form of the device being shown in the drawingsand in which the dome is permanently fixed in position on the containerby means of being soldered to the container, as at 22. I i

The inner receptacle comprises preferably a cylindrical shell 23, havinga bottom 2a of similar contour to the dished bottom 15 of the outerreceptacle, the said bottom 24 being either permanently fixed'withrespect to the bottom of the outer receptacle or removable herefroi'n asmay be desired, it being preferred to permanently fin the innerreceptacle with respect to the outer receptacle by brazing the bottom 24centrally on the bottom 15. i I

The inner and outer receptacles divide the container into twocompartments which, inthe preferred form, consists of a central innercompartment and an annular outer com artment; the inner compartmentbeing intended for the reception of the A or acid solution and the outercompartment being intended for the B or basic solution, either or bothsolutions being provided with a foam producing material.

For the purpose of preventing any un- 1 timely comixtures of thesesolutions to prevent the untimely generation of foam, means is providedfor the prevention of splashing of the solutions, such means includingprovisions for preventing the transmission or propagation of waveformations set up in the receptacles during ordinary transit of thecontainer. In my present invention such means take the form of baiileplates, subdividing portions of the receptacles at their upper ends, thebaffle plates beingarranged pre'fenably in a radial manner, the innerreceptacle being provided with the radial baffle plates 25b'razedtogether, as at 26, these plates fitting the inner surface of the innerreceptacle, the plates being held by said surface either frictionally orby being brazedto the said surface, these plates being fitted to theinner receptacle adjacent the ripper and open end thereof and extendinglongitudinally in the receptacle for p'ref erably only a portion of thesaid receptacle. The baflie plates for the outer annular compartment maybe arranged in a similar manner to that shown for the inner receptaclebut in the preferred form such outer baffle plates Ill) comprise aplurality of elements 27 having a Ushaped cross sectional formation, thebottom 28 of the U fitting the outer surface of the inner receptacle,the said portion 28 being permanently fitted to said inner receptacle,as by being brazed thereto. The walls 29 of the elements 27 comprise thebafiie plates proper, said walls extending the width of the annularcompartment and terminating adjacent the inturned annular bead 30, the

plates 29 being supported by the said bead 30 and being retained thereoneither frictiona-lly or by being soldered or brazed thereto. Theseradial baflle plates subdividing each compartment adjacent the upperends thereof provide means for the prevention of wave propagation in thesaid compartment-s, thus breaking up any tendency of the solutions tosplash during handling of the container. It will be furthermore notedthat the outer baffle plates 29, besides accomplishing the purpose ofproducing a splash proof effect, further accomplish the purpose ofsupporting the inner receptacle within the outer receptacle by theengagement or the fixed engagement of the plates 29 with the annularbead 30. This support taken together with the support between thebottoms of both receptacles, effectively retains the inner receptaclewithin the outer receptacle and such support eliminates the prior meansof supporting the said inner receptacle, which hitherto has extendedinto that portion of the container where comixture takes place, formingan obstruction in said chamber, which obstruction prevented, in somedegree, the efficient formation and emission of the generated foam. Thepresent supporting means eliminates such obstructive means.

The dome 19 is provided with openings 31 and 32, alined respectivelywith the inner and outer compartments, the said openings being providedfor the purpose of charging the inner compartment with the A solutionand the outer compartment with the B solution. Each opening is providedwith a tubular member 33 fitted to the interior of the dome, as bybrazing the flange portion 34 to the inner surface of the dome, the saidtubular members being properly threaded, as at 35, for the reception ofinternally threaded closure means 36, gaskets 37 being provided tosecure a. more efficient closure.

The dome 19 forms a wall of that portion of the device where comixtureof the solutions takes place and said dome is appropriately providedwith a threaded nipple 3S fitted to the interior surface of the dome, asby being brazed thereto at 39, the thread of the nipple receiving theusual nozzle 10, the nozzle being insertible through an opening in theupper supporting end 12.

For the purpose of conveniently handling the device in the event offire, the end supporting means 1]. and. are provided with straps 41 and42, said straps being adapted to be manually grasped by the operator.

In the form of the device shown in Fig ures 5 to 8 of the drawings,means is further provided to minimize the tendency of the solutions fromsplashing upwardly, such means for the inner receptacle taking the formof a centrally located plate 13 and for the outer receptacle taking theform of spaced annular plates 4H- and f5. These plates not only minimizethe upward splash ing ofthe solutions, thereby further providing asplash proof effect; but also serve the purpose of regulating the flowof the solutions into the mixing portion of the container in the eventof fire, as will hereinafter appear.

The use and operation of my extinguisher will be apparent from the abovedescription thereof. The charging of the compartments is effectedthrough the charging openings 31 and 32. During ordinary handling of thedevice or during transit of the device on a vehicle, the baffle platesf0 7111 an effective barrier for the propagation of any waves set up inthe compartments, this preventing to a large degree the tendency of thesolu tions to splash during such transit. The outer baffle plates alsoprovide a firm support for the inner receptacle, doing away with anyobstructing support in the mixing portion of the container.

Use of such baffle plates further eliminates the necessity of unsurestopplc means, this further eliminating unnecessary obstructions in thepath of foam emission in the mixing portion of the device. In the eventof fire the container is grasped by the operator, straps 11 and 42 beingconveniently supplied for this purpose, the container being tilted orinverted, permitting the solutions in the receptacles to How into thenormally upper portion of the device, to be there comixed to produce afire extinguishing foam. In the form shown in Figures 5 to 8, thecentral and the annular plates 43 to 45, further provide a splash proofeffect and at the same time permit of a regulated flow of the solutionsinto the mixing chamber, the annular openings 16 and 47 beingpredetermined for the proper regulation of such flow, this regulatedflow of the solutions affording a gradual comixture of the solutions andminimizing pressure strains in the container.

It will be apparent that although I have shown the parts as permanentlyfitted together, it may be found convenient for cleaning purposes tomake the parts easily sepaable, for example, the inner container insteadof being soldered at points to the outer container, may be fitted to theouter container, being held therein by friction of parts, the dome beingmade removable instead of being permanently fixed to the walls of thecontainer in order to permit the the reception of component solutionswhich upon admixture produce a fire extinguishing medium, andanti-splash means longitudinally subdividing the compartment between thecontainers, thesaid anti-splash means being constructed to support theinner container in the outer container.

2. A fire extinguishing device comprising an outer container and aninner container; said containers defining compartments both open at anend thereof for the reception of component solutions which uponadmixture produce a fire extinguishing medium, and means longitudinallysubdividing each of the containers adjacent the open ends thereof; saidmeans being constructed and arranged to prevent splashing of thesolutions in the said compartments.

3. A fire extinguishing device comprising an outer container and aninner container, said containers defining compartments for the receptionof component solutions which upon admixture produce a fire extinguishingmedium, anti-splash means longitudinally subdividing the compartmentbetween the containers, the said anti-splash means being constructed tosupport the inner container in the outer container, and anti-splashmeans longitudinally subdividing the compartment defined by the innercontainer.

4c. A fire extinguishing device comprising a plurality of containersdefining a plurality of compartments, the compartments being adapted tohold component solutions which upon admixture produce a fireextinguishing medium, and means for preventing splashing of thesolutions in said compartments, said means comprising baffle plateslongitudinally subdividing the compartments, some of the baflie platesbeing constructed to support one container within the other.

5. A fire extinguishing device comprising an outer container and aninner container; said containers defining compartments both open at anend thereof for the reception of component solutions which uponadmixture produce a fire extinguishing medium, and means for preventingsplashing of said solutions in said compartments, said means comprisingradial baflie plates subdividing such compartments.

6. A fire extinguishing device comprising a container subdivided into aplurality of compartments open at an end thereof, the compartmentsadapted to hold component solutions which upon admixture produce a fireextinguishing medium, and means for preventing splashing of saidsolutions in said compartments longitudinally of the same, said meanscomprising hafiie plates subdividing a portion only of such compartmentsat the open ends thereof.

7. A fire extinguishing device comprising a plurality of containersdefining open ended compartments for the reception of componentsolutions which upon comixture pro,- duce a fire extinguishing mediumincluding an inner container for holding one of the solutions, saidinner container being pro vided at the open end thereof with radialbattle plates for preventing splashing of the solution content therein.

8. In a fire extinguishing device in which ed to be mounted within anouter container i for holding one of the solutions, said inner containerbeing provided interiorly and exteriorly at one end thereof with bafileplates for preventing splashing of the solutions held by the containers.

9. In a fire extinguishing device in which are provided a plurality ofcompartments, for the reception of component solutions which uponadmixture produce afire extinguishing medium, an inner container adaptedto be mounted within an outer container for holding one of thesolutions, said inner container being provided interiorly and exteriorlyat one end thereof with radial baflie plates for preventing splashing ofthesolutions held by the containers, the battle plates on the exteriorof the inner container providing a means for supporting the inner withinthe outer container.

10. A fire extinguishing device comprising a container subdivided into aplurality of compartments open at one end thereof, the compartmentsadapted to hold component solutions which on admixture produce a fireextinguishing medium, and means adjacent the open ends of thecompartments for pre venting splashing of said solutions in saidcompartments; said means comprising pro-- visions for preventing" thepropagation of wave formations set up in said compartments, and furtherprovisions for preventing movement of the solutions out of thecompartments incident to transportation of the device, said latterprovisions being constructed and arranged to permit a regulated feed ofthe solutions upon inversion of the device in the event of fireemergencies.

11. In a fire extinguishing device in which are provided a plurality ofcompartments for the reception of component solutions which uponadmixture produce a fire extinguishing medium, an inner container forholding one of the solutions, said inner container being provided at oneend thereof with means for preventing splashing of the solutioncontained therein, said means comprising provisions for preventingpropagation of wave formations set up in the container, and furtherprovisions for preventing movement of the solution out of the con tainerincident to transportation 01" the de-- vice.

12. In a lire extinguishing device in which are provided a plurality ofcompartments for the reception of component solutions which uponadmixture produce a fire extinguishing medium, an inner containeradapted to be mounted within an outer container for holding one of thesolutions, said inner container being provided interiorly and exteriorlyat one end thereof with longitudinally arranged bafile plates forpreventing splashing of the solutions held by the containers, and disksmounted on the baffle plates for further preventing splashing ot' thesaid solutions.

13. A fire extinguishing device comprising an outer and an innercontainer; said containers defining compartments both open at an endthereof for the reception of com ponent solutions which upon admixtureproduce a fire extinguishing medium, baflle plates fitted to saidcontainers and extending longitudinally of said containers at the openends thereof, and disks mounted on said plates at the open ends of thecon tainers and extending transversely of the said containers; theplates and disks providing means for preventing splashing of thesolutions in the containers.

Signed at New York in the county of New York and State of New York this3rd day of December A. D. 1920.

ORLANDO R. Eli- IN.

